APA (7th ed.) Citation

Churchman, C. W. (1968). The systems approach. Delacorte Press.

Chicago Style (17th ed.) Citation

Churchman, C. West. The Systems Approach. New York: Delacorte Press, 1968.

MLA (9th ed.) Citation

Churchman, C. West. The Systems Approach. Delacorte Press, 1968.